1. RESULTS AND DISCUSSION
Project Portable Chair
GE 105 (Introduction to Engineering Design)
Section: BY: Group 5
SUPERVISOR: Dr. Mohanad El Harbawi
A chair is a piece of furniture with a raised surface used to sit on. The Chairs are most often supported by four legs and have a back.
There are many kinds of a chair that are completely different in their shape, size, color, and also what it is has made of.
we all need to be comfortable, especially when we walk or stand up for a long time or when we are in the school or when we are in the markets or even at home, so chairs are important for our daily life.
There are a lot of chairs in the markets, different shapes and types. However, these types have some weaknesses regarding the design.
The first problem is that the chairs in the markets are fixed (not portable), and cannot be moved easily.
The second problem is the weight of the chairs in the markets are very heavy, especially for the old people to carry them ever they want
The third problem is the cost of the chairs in the markets are expensive.
Primary Objective :
Design a portable chair to be easy to carry and move it anywhere, especially for the old people and for special needs, so they can carry the chair anywhere they want.
Secondary Objectives :
The chair will be easy to use, not heavy, nice shape, will be design as a bag, marketable, portable, low cost and easy to make. 1
INTRODUCTION 2
PROBLEM STATEMENT 3
OBJECTIVES
Portable.
Easy to carry and use.
Low weight.
Cheap.
Simplicity.
Made from wood and aluminum.
Design a portable chair.
Easy to carry and move it anywhere.
Should be carried as a handbag.
Should be easy for old people.
Weight must be less than 3 kg.
Cost must not exceed 100 SR.
Must be safe.
Applied weight should be less than 90 Kg. 4
Criteria 5 6
Need Analysis
METHODOLOGY
Start
Conceptual Design
Problem Identification
Search for
Information
Preliminary Design
Design the chair to be carried as a handbag.
Size: length: 47 cm, width: 35 cm, height: 43 cm.
Weight not exceed 3 kg.
Cost not exceed SR 100 SR.
3 years lifetime. 7
Constraints
Final Design
More
Information
Needed?
Yes
Build and Test No
Forming Ideas
Product
Acceptable? No
Search for Alternative
Proposals 9
Yes
Sketch & Picture
Evaluate Proposals
Delivery of Product
Any
Proposal
Feasible?
End No
Yes 8
RESULTS AND DISCUSSION
Function
Option 1
Option 2
Option 3
Material of the base
Steel
Plastic
Wood
Material of the legs
Aluminum
Cover
Heavy Cloth
Light Cloth
Leather
Fix
Glue
Nails
weld
Criteria
Concept
Easy to Carry and Use
Low Weight
Low Cost
Durability
Score
Weight 25
Design (a) 3 2 9
425 75 50
225
Design (b) 8 6
775
200
150
Design (c) 10 5
650
250
125
- The chairs in the markets are fixed, heavy and expensive.
- Best solution is (portable chair).
- Material suggested is wood.
- Wood is flexible, not heavy, very cheap and has a nice shape. 10
CONCLUSION
From the comparison table we chose design (b) because it has the highest points.
Design (b) is flexible, not heavy, very cheap, durable and has a nice shape.